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Hi, I'm starting to work with ob-octave and found several problems: The first, for which I have a fix (see patch below) is that octave's output was passed on as a string instead of being interpreted as a table: [diff removed] Now this works: 8<------------------------------------------------------------ #+source: test_output #+begin_src octave :results value vector [[1 2 3];[4 5 6]] #+end_src #+results: test_output | 1.00000000e+00 | 2.00000000e+00 | 3.00000000e+00 | | 4.00000000e+00 | 5.00000000e+00 | 6.00000000e+00 | 8<------------------------------------------------------------ (before the patch you'd get a single table element with something like "1 2 3\n 4 5 6\n" inside). The second problem is that if I use octave table output as input to another block, it gets interpreted as a string instead of a vector: 8<------------------------------------------------------------ #+results: test_output | 1.25000000e+00 | #+source: check_input #+begin_src octave :var input=test_output() :results output ischar( input ) size( input ) #+end_src #+results: check_input : input = 1.25000000e+00 : ans = 1 : ans = : 1 14 8<------------------------------------------------------------ This has to do with the EXP notation. The 'e+00' suffix makes the whole table into a string. The problem is with "%S" in the formatting inside org-babel-octave-var-to-octave. The following patch seems to fix it (and makes it possible to work with complex numbers inside the tables):: [diff removed] A third problem is with org-babel-octave-var-to-octave. For example: : (org-babel-octave-var-to-octave '( ( 1 2 3 ) ( 4 5 6 ) )) : -> "[[1, 2, 3], [4, 5, 6]]" This is not a 2x3 matrix, but a 1x6 vector: : octave-3.2.3:1> [[1,2,3],[4,5,6]] : ans = : 1 2 3 4 5 6 a semicolon ';' or '\n' is needed between rows instead of a comma. To sum up: - 2 patches for prepare-session and importing the results back as org-tables (I don't know if these patches break anything). - 1 problem with matrix notation in org-babel-octave-var-to-octave. I'll try to provide a patch for this today. 2010-08-01 Juan Pechiar <Pechiar@computer.org> * ob-octave.el (org-babel-octave-evaluate-external-process): use `org-babel-octave-import-elisp-from-file' instead of `org-babel-eval-read-file'. (org-babel-octave-var-to-octave): separate matrix rows with ';', and use '%s' as format specifier instead of '%S'